Zhang Jian Xin, Zhang Da Ming, Han Xu Guang
Forensic Medical Examination Center of Beijing Public Security Bureau, Beijing, China.
Forensic Sci Int. 2008 Nov 20;182(1-3):13-9. doi: 10.1016/j.forsciint.2008.09.012. Epub 2008 Nov 12.
A total of 48 methamphetamine hydrochloride samples from eight seizures were analyzed using gas chromatography-mass spectrometry (GC-MS) and gas chromatography with a flame ionization detector (GC-FID). Major impurities detected include 1,2-dimethyl-3-phenylaziridine, ephedrine/pseudoephedrine, 1,3-dimethyl-2-phenylnaphthalene, 1-benzyl-3-methylnaphthalene. These data are suggestive of ephedrine/pseudoephedrine as the main precursor of the methamphetamine hydrochloride samples seized during 2006-2007. Additionally the presence of 1,3-dimethyl-2-phenylnaphthalene, 1-benzyl-3-methylnaphthalene is indicative that six seizures were synthesized via the more specific ephedrine/hydriodic acid/red phosphorus method. In addition, five impurities were found for the first time in methamphetamine hydrochloride samples. Seventeen impurity peaks were selected from the GC-FID chromatograms. The peak areas of the selected peaks were then grouped for cluster analysis.
使用气相色谱-质谱联用仪（GC-MS）和带火焰离子化检测器的气相色谱仪（GC-FID）对来自八次缉获行动的总共48个盐酸甲基苯丙胺样品进行了分析。检测到的主要杂质包括1,2-二甲基-3-苯基氮丙啶、麻黄碱/伪麻黄碱、1,3-二甲基-2-苯基萘、1-苄基-3-甲基萘。这些数据表明麻黄碱/伪麻黄碱是2006年至2007年期间缉获的盐酸甲基苯丙胺样品的主要前体。此外，1,3-二甲基-2-苯基萘、1-苄基-3-甲基萘的存在表明六次缉获的样品是通过更特定的麻黄碱/氢碘酸/红磷法合成的。此外，在盐酸甲基苯丙胺样品中首次发现了五种杂质。从GC-FID色谱图中选择了17个杂质峰。然后将所选峰的峰面积进行分组以进行聚类分析。
